generally a big waste of time and space the chances that someone selling a particular item and actually only wants to buy your particular item (in a certain size, color and condition) is QUITE LOW. Instead of so many stupid trade threads that almost never work out, how about you just sell what you have, then buy what you want? That is pretty much what most normal people do. Of course, it is a free site and you can do what you want, but talk about being ineffective. Just my $.02
personally trading is one of my favorite parts of newschoolers, sure theres gonna be the ocassional bad experience but i wouldnt take it for granted. its really cool when both sides walk away with excatly what they were looking for.